Pentest source code scanning
Skill bertbertov/claude-stack/skills/pentest-source-code-scanning
A working Claude Code config from a solo builder who ships — 156 skills, 6 hooks, conductor routing pattern, auto-dedupe watch.
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Security-focused source code review and SAST. Scans for vulnerabilities (OWASP Top 10, CWE Top 25), CVEs in third-party dependencies/packages, hardcoded secrets, malicious code, and insecure patterns. Use when given source code, a repo path, or asked to "audit", "scan", "review" code security, or "check dependencies for CVEs".
SKILL.md
3.8 KB, as published. Nobody here has run it
Source Code Security Review
Quick Start
- Identify - languages, frameworks, package managers present
- Automated SAST - run tools appropriate to the stack
- Dependency CVEs - scan lockfiles/manifests for known CVEs
- Secrets scan - detect hardcoded credentials/tokens
- Manual review - trace high-risk sinks (exec, eval, query, deserialize)
- Malicious code - check for backdoors, obfuscation, suspicious network calls
- Report - findings with CWE/CVE refs, severity, PoC, remediation
Workflow
Phase 1: Enumerate
- Languages: ls **/*.{py,js,ts,java,go,rb,php,cs,rs}
- Packages: find package.json, requirements.txt, go.mod, pom.xml, Gemfile, composer.json, Cargo.toml
- Entry points: main(), index.*, app.*, server.*
- Config files: .env*, config.*, settings.*, *.yaml, *.toml
Phase 2: Automated SAST
See sast-tools.md for commands per language.
Key tools:
- Multi-language: Semgrep (
semgrep --config=auto .) - Python: Bandit (
bandit -r . -f json) - JavaScript/TS: ESLint security plugin, njsscan
- Java: SpotBugs + FindSecBugs
- Go: gosec (
gosec ./...) - PHP: PHPCS Security Audit
- Ruby: Brakeman (
brakeman -o report.json) - All: CodeQL (via
gh codeql)
Phase 3: Dependency CVE Scan
See dependency-cve-scanning.md for commands.
| Ecosystem | Command |
|---|---|
| npm/yarn | npm audit --json / yarn audit |
| Python | pip-audit -r requirements.txt |
| Java | dependency-check --scan . |
| Go | govulncheck ./... |
| Ruby | bundle audit |
| Generic | trivy fs . / grype dir:. |
Phase 4: Secrets Detection
See secrets-detection.md.
trufflehog filesystem . --json
gitleaks detect --source . -v
Phase 5: Manual Review
Focus on high-risk sinks — see manual-review.md:
- Injection sinks:
exec,eval,query,system,popen - Deserialization:
pickle.loads,ObjectInputStream,unserialize - Crypto: hardcoded keys, weak algorithms (MD5, SHA1, DES, ECB)
- Auth: JWT validation, session management, RBAC enforcement
- File ops: path construction with user input
Phase 6: Malicious Code
See malicious-code.md:
- Obfuscated strings (base64, hex, charCode)
- Unexpected network calls in library code
- Typosquatting indicators
- Postinstall/lifecycle script abuse
- Hidden backdoors in dependencies
Language-Specific Patterns
See language-patterns.md for Python, JS, Java, Go, PHP, Ruby.
Severity Mapping
| Severity | CVSS | Examples |
|---|---|---|
| Critical | 9.0+ | RCE, SQLi with exfil, auth bypass |
| High | 7.0-8.9 | Stored XSS, SSRF, insecure deserialization |
| Medium | 4.0-6.9 | Reflected XSS, info disclosure, IDOR |
| Low | 0.1-3.9 | Missing headers, verbose errors |
Output Format
findings/
<severity>-<vuln-type>-<location>.md # One file per finding
evidence/
<tool>-output.json # Raw tool output
summary-report.md # Executive summary
Each finding: CWE/CVE ID | File:Line | Severity | PoC | Remediation
Critical Rules
- Never execute untrusted code during review
- Treat all findings as potential until verified
- Always cross-reference CVEs against actual version in use
- Report supply chain issues separately (they affect all users)